Description
Pfizer Bacteriostatic Water for Injection USP is a sterile, non-pyrogenic aqueous diluent manufactured by Pfizer Inc., containing 0.9% (w/v) benzyl alcohol as a bacteriostatic preservative. The product is supplied in 30 mL multi-dose vials and is widely used in laboratory and research settings as a reconstitution diluent for lyophilized peptide research compounds, biological reagents, and other research materials requiring a sterile aqueous solvent. The 0.9% benzyl alcohol preservative inhibits microbial growth in the vial after multiple punctures, allowing the same vial to be used across multiple reconstitution events within standard stability windows. The product is manufactured under USP and cGMP standards at Pfizer-operated facilities. Bacteriostatic water differs from sterile water for injection (SWFI) by the inclusion of the benzyl alcohol preservative, which extends the multi-use shelf life of the diluent vial. This product is supplied here strictly as a research-grade sterile diluent for laboratory reconstitution applications.
Research Applications
• Lyophilized peptide reconstitution — sterile diluent for laboratory reconstitution of lyophilized research peptide compounds
• Multi-use vial format — 0.9% benzyl alcohol preservative permits multiple sterile draws within stability windows
• USP-grade sterility — manufactured under United States Pharmacopeia and cGMP standards
• Research compound compatibility — broad compatibility with lyophilized peptide and protein research compounds
• Sterile laboratory workflow — supports aseptic technique in research reconstitution applications
Specifications
• Form: Sterile clear aqueous solution
• Volume: 30 mL per multi-dose vial
• Quantity: 1 vial
• Preservative: Benzyl alcohol 0.9% (w/v)
• pH range: 4.5 – 7.0 (per USP specifications)
• Grade: USP / cGMP-manufactured
• Sterility: Sterile, non-pyrogenic
• Storage: Room temperature (20–25 °C); do not freeze; protect from contamination
Identity Basics
• Product: Pfizer Bacteriostatic Water for Injection USP
• Composition: Sterile water for injection + 0.9% (w/v) benzyl alcohol
• Water CAS: 7732-18-5
• Benzyl Alcohol CAS: 100-51-6
• Format: 30 mL multi-dose vial with rubber stopper
• Manufacturer: Pfizer Inc.
⚠️ Disclaimer
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This product is intended for laboratory research use only.
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Not for human or veterinary use.
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Not approved for diagnostic, therapeutic, or medical applications.
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Handle using appropriate laboratory safety procedures and personal protective equipment.
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Do not use in individuals with known hypersensitivity to benzyl alcohol. Benzyl alcohol-containing diluents have been associated with toxicity in certain populations including neonates.
